Special water-based slurry polymer for polyester fibers and preparation method of special water-based slurry polymer

Abstract

The preparation method comprises the following steps: adding a soluble polyester hot melt adhesive into trioxymethylene and trichloromethane, stirring and dissolving, then adding trimethylchlorosilane, placing in an ice-water bath, stirring, then adding a tin tetrachloride-trichloromethane solution, stirring for 0.5 h, then adding a sodium hydroxide solution, stirring for 0.5 h, then adding a sodium hydroxide solution, stirring for 0.5 h, adding a sodium hydroxide solution, stirring for 0.5 h, adding a sodium hydroxide solution, and stirring for 0.5 h to obtain the special water-based slurry polymer for the polyester fiber. Heating to 30-50 DEG C, continuously reacting for 1-2 hours, finally adding a small amount of methanol / water mixed solution, and carrying out vacuum concentration and room-temperature vacuum drying for 24 hours to obtain the chloromethylated soluble polyester hot melt adhesive. And dissolving the chloromethylated soluble polyester hot melt adhesive and an amine compound in a first solvent, reacting at 40-80 DEG C for 6-12 hours, precipitating with diethyl ether, and drying in vacuum for 12 hours to obtain the water-based slurry polymer. Compared with a traditional sizing agent, the obtained water-based sizing agent polymer has the advantages of excellent bonding force, wear resistance and the like, and can be applied to sizing agents for polyester fibers.

Description

Technical Field

[0001] The present invention relates to the field of polyester fiber slurry, in particular to a water-based slurry polymer specially used for polyester fiber and a preparation method thereof Background Art

[0002] Human life is inseparable from textiles. my country's textile industry is not only a traditional industry, but also an eternal industry. The current Chinese textile industry still plays an irreplaceable historical role in boosting domestic demand, accumulating foreign exchange, supporting emerging industries, expanding employment, boosting agriculture and promoting urban prosperity. However, during the weaving process of polyester fabrics, the warp yarns are subjected to multiple stretching, bending and friction. This can easily lead to fiber splitting and pilling; in severe cases, it can cause breakage. Sizing can form a protective layer on the fiber surface to protect the fiber from damage and prevent pilling. The main function of sizing is to enhance the cohesion between fibers by increasing the bonding strength between fibers. This helps prevent the fibers from separating or sliding during weaving, thereby improving the stability and strength of the fabric.

[0003] Soluble polyester hot melt adhesive has high bonding strength, good heat resistance and cold resistance, and can be used in polyester fiber special sizing. In order to improve the water solubility of soluble polyester hot melt adhesive, the soluble polyester hot melt adhesive is chloromethylated and reacted with amine compounds to generate a water-based sizing polymer with a quaternary ammonium salt structure. This water-based sizing polymer is easy to size polyester fibers and has good adhesion, which improves the bonding force between polyester fibers and plays a good role in preventing pilling.

[0004] The invention discloses a water-based slurry polymer for polyester fiber and a preparation method thereof. A soluble polyester hot melt adhesive is added to trioxymethylene and chloroform, stirred and dissolved, then trimethylsilyl chloride is added, placed in an ice-water bath and stirred, then a tin tetrachloride-chloroform solution is added, stirred for 0.5 hours, heated to 30-50°C and continued to react for 1-2 hours, and finally a small amount of methanol / water mixed solution is added, concentrated under reduced pressure, and vacuum dried at room temperature for 24 hours to obtain a chloromethylated soluble polyester hot melt adhesive; then the chloromethylated soluble polyester hot melt adhesive and an amine compound are dissolved in a first solvent, reacted at 40-80°C for 6-12 hours, precipitated by ether, and vacuum dried for 12 hours to obtain a water-based slurry polymer. The water-based slurry polymer obtained by the invention has the advantages of excellent adhesion, wear resistance, etc. compared with traditional slurries. Summary of the invention

[0005] The purpose of the present invention is to provide a special aqueous slurry polymer for polyester fiber and a preparation method thereof.

[0006] In order to achieve the above objectives, the following technical solutions are provided: A water-based slurry polymer for polyester fiber and a preparation method thereof include the following steps: (1) Add 0.01 mol of soluble polyester hot melt adhesive to 50-80 g of trioxymethylene and 300-500 mL of chloroform, stir and dissolve, then add 100-200 mL of trimethylsilyl chloride, place in an ice water bath and stir, then add 200-300 mL of tin tetrachloride-chloroform solution, stir for 0.5 h, heat to 30-50 ° C and continue to react for 1-2 h, finally add a small amount of methanol / water mixed solution, concentrate under reduced pressure, and vacuum dry at room temperature for 24 h to obtain chloromethylated soluble polyester hot melt adhesive.

[0007] (2) The product of (1) and 0.01-0.02 mole of an amine compound are dissolved in 100 mL of a first solvent, reacted at 40-80° C. for 6-12 h, precipitated with 1 L of ether and vacuum dried for 12 h to obtain an aqueous slurry polymer.

[0008] Preferably, the aqueous slurry polymer for polyester fiber and the preparation method thereof are characterized in that the amine compound is N,N-dimethylmethylamine, N,N-dimethylethylamine, N,N-dimethylpropylamine, N,N-dimethylbutylamine, N,N-diethylethylamine, etc., but not limited thereto.

[0009] Preferably, the aqueous slurry polymer for polyester fiber and the preparation method thereof are characterized in that the first solvent is N,N-dimethylformamide, N,N-dimethylacetamide, dimethyl sulfoxide, etc., but not limited thereto.

[0010] The beneficial effect of the present invention is that a soluble polyester hot melt adhesive having high bonding strength, good heat resistance and cold resistance is chloromethylated and then reacted with an amine compound to generate an aqueous slurry polymer with a quaternary ammonium salt structure, which is easy to size polyester fibers, improves the bonding force between polyester fibers, and plays a good role in preventing pilling. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 A water-based slurry polymer for polyester fiber and a preparation method thereof; the hydrogen nuclear magnetic resonance spectrum of the product (1) in Example 1; Figure 2 This is a test table of the adhesion performance of Examples 1-6. Specific implementation methods The principle of the invention is that the soluble polyester hot melt adhesive is chloromethylated and reacted with amine compounds to generate a water-based slurry polymer with a quaternary ammonium salt structure. The soluble polyester hot melt adhesive improves the bonding force between polyester fibers, and the quaternary ammonium salt structure improves good water solubility, which plays a good role in preventing pilling of polyester fibers.

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments, and the purpose and effects of the present invention will become more apparent.

[0014] Embodiment 1: (1) Add 0.01 mol of soluble polyester hot melt adhesive to 50 g of trioxymethylene and 300 mL of chloroform and stir to dissolve. Then add 100 mL of trimethylsilyl chloride and stir in an ice-water bath. Then add 200 mL of tin tetrachloride-chloroform solution and stir for 0.5 h. Then heat to 30 °C and continue to react for 2 h. Finally, add a small amount of methanol / water mixed solution, concentrate under reduced pressure, and vacuum dry at room temperature for 24 h to obtain chloromethylated soluble polyester hot melt adhesive.

[0015] (2) The product of (1) and 0.01 mol of N,N-dimethylformamide were dissolved in 100 mL of N,N-dimethylformamide, reacted at 40 °C for 12 h, precipitated with 1 L of ether and dried in vacuum for 12 h to obtain an aqueous slurry.

[0016] Embodiment 2: (1) Add 0.01 mol of soluble polyester hot melt adhesive to 80 g of trioxymethylene and 500 mL of chloroform and stir to dissolve. Then add 200 mL of trimethylsilyl chloride and stir in an ice-water bath. Then add 300 mL of tin tetrachloride-chloroform solution and stir for 0.5 h. Then heat to 50 °C and continue to react for 1 h. Finally, add a small amount of methanol / water mixed solution, concentrate under reduced pressure, and dry in vacuum at room temperature for 24 h to obtain chloromethylated soluble polyester hot melt adhesive.

[0017] (2) The product of (1) and 0.02 mol of N,N-dimethylethylamine were dissolved in 100 mL of N,N-dimethylacetamide, reacted at 80°C for 6 h, precipitated with 1 L of ether and vacuum dried for 12 h to obtain an aqueous slurry.

[0018] Embodiment 3: (1) Add 0.01 mol of soluble polyester hot melt adhesive to 50 g of trioxymethylene and 300 mL of chloroform and stir to dissolve. Then add 100 mL of trimethylsilyl chloride and stir in an ice-water bath. Then add 200 mL of tin tetrachloride-chloroform solution and stir for 0.5 h. Then heat to 30 °C and continue to react for 2 h. Finally, add a small amount of methanol / water mixed solution, concentrate under reduced pressure, and vacuum dry at room temperature for 24 h to obtain chloromethylated soluble polyester hot melt adhesive.

[0019] (2) The product of (1) and 0.01 mol of N,N-dimethylpropylamine were dissolved in 100 mL of dimethyl sulfoxide, reacted at 40 °C for 12 h, precipitated with 1 L of ether and vacuum dried for 12 h to obtain an aqueous slurry.

[0020] Embodiment 4: (1) Add 0.01 mol of soluble polyester hot melt adhesive to 80 g of trioxymethylene and 500 mL of chloroform and stir to dissolve. Then add 200 mL of trimethylsilyl chloride and stir in an ice-water bath. Then add 300 mL of tin tetrachloride-chloroform solution and stir for 0.5 h. Then heat to 50 °C and continue to react for 1 h. Finally, add a small amount of methanol / water mixed solution, concentrate under reduced pressure, and dry in vacuum at room temperature for 24 h to obtain chloromethylated soluble polyester hot melt adhesive.

[0021] (2) The product of (1) and 0.01 mol of N,N-dimethylbutylamine were dissolved in 100 mL of N,N-dimethylformamide, reacted at 80°C for 6 h, precipitated with 1 L of ether and vacuum dried for 12 h to obtain an aqueous slurry.

[0022] Embodiment 5: (1) Add 0.01 mol of soluble polyester hot melt adhesive to 50 g of trioxymethylene and 300 mL of chloroform and stir to dissolve. Then add 100 mL of trimethylsilyl chloride and stir in an ice-water bath. Then add 200 mL of tin tetrachloride-chloroform solution and stir for 0.5 h. Then heat to 30 °C and continue to react for 2 h. Finally, add a small amount of methanol / water mixed solution, concentrate under reduced pressure, and vacuum dry at room temperature for 24 h to obtain chloromethylated soluble polyester hot melt adhesive.

[0023] (2) The product of (1) and 0.01 mol of N,N-diethylethylamine were dissolved in 100 mL of N,N-dimethylacetamide, reacted at 40 °C for 12 h, precipitated with 1 L of ether and vacuum dried for 12 h to obtain an aqueous slurry.

[0024] Embodiment 6: (1) Add 0.01 mol of soluble polyester hot melt adhesive to 80 g of trioxymethylene and 500 mL of chloroform and stir to dissolve. Then add 200 mL of trimethylsilyl chloride and stir in an ice-water bath. Then add 300 mL of tin tetrachloride-chloroform solution and stir for 0.5 h. Then heat to 50 °C and continue to react for 1 h. Finally, add a small amount of methanol / water mixed solution, concentrate under reduced pressure, and dry in vacuum at room temperature for 24 h to obtain chloromethylated soluble polyester hot melt adhesive.

[0025] (2) The product of (1) and 0.02 mol of N,N-diethylethylamine were dissolved in 100 mL of dimethyl sulfoxide, reacted at 80 °C for 1 h, precipitated with 1 L of ether and vacuum dried for 12 h to obtain an aqueous slurry.

Claims

1. A water-based slurry polymer for polyester fiber and a preparation method thereof, characterized in that: The following steps are involved: (1) Add 0.01 mole of soluble polyester hot melt adhesive to 50-80g of trioxymethylene and 300-500mL of chloroform, stir and dissolve, then add 100-200mL of trimethylsilyl chloride, place in an ice water bath and stir, then add 200-300mL of tin tetrachloride-chloroform solution, stir for 0.5h, heat to 30-50°C and continue to react for 1-2h, finally add a small amount of methanol / water mixed solution, concentrate under reduced pressure, and vacuum dry at room temperature for 24h to obtain chloromethylated soluble polyester hot melt adhesive; (2) The product of (1) and 0.01-0.02 mole of an amine compound are dissolved in 100 mL of a first solvent, reacted at 40-80° C. for 6-12 h, precipitated with 1 L of ether and vacuum dried for 12 h to obtain an aqueous slurry polymer.

2. The aqueous slurry polymer for polyester fiber and the preparation method thereof according to claim 1, characterized in that: The amine compounds are N,N-dimethylmethylamine, N,N-dimethylethylamine, N,N-dimethylpropylamine, N,N-diethylethylamine and the like.

3. The aqueous slurry polymer for polyester fiber and the preparation method thereof according to claim 1, characterized in that: The first solvent is N,N-dimethylformamide, N,N-dimethylacetamide, dimethyl sulfoxide, etc.

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